N. ORD.-ORCHIDACE. 170° 
GENUS.—C YPRIPEDIUM,* LINN. 
SEX. SYST.-GYNANDRIA DIANDRIA. 
CY PRIPEDIUM PUBESCENS. 
YELLOW LADY'S SLIPPER. 
SYN.—CYPRIPEDIUM PUBESCENS, WILLD.; CYPRIPEDIUM LUTEUM, 
AIT. (?) 
COM. NAMES.—LARGER YELLOW LADY’S SLIPPER, MOCCASIN 
FLOWER, AMERICAN VALERIAN, YELLOWS, NOAH’S ARK, YEL- 
LOW UMBIL, NERVE-ROOT; (FR.) SABOT DE VENUS JAUNEH, CY- 
PERIPEDE JAUNE; (GER.) GELBFRAUENSCHUH. 
A TINCTURE OF THE FRESH ROOT OF CYPRIPEDIUM PUBESCENS, WILLD. 
Description.—This beautiful, pubescent herb, grows to a height of from 1 to 
2 feet. Root horizontal, cylindrical, thickly beset with fibrous rootlets. Stem 
simple, erect, leafy to the top. Leaves large, ovate, or ovate-lanceolate, pointed, 
prominently many-nerved, plicate, and sheathing at the base. Inflorescence ter- 
minal; flowers single or in pairs, scentless. Sefa/s 3, two of which are united 
under the lip, elongated lanceolate, brownish or purplish, pointed, and spreading. 
Petals \anceolate, undulate and twisted, brownish or purplish, pointed, narrower 
than the sepals; sac, 4p, or labellum roundish, shorter than the sepals and petals, 
much inflated above, horizontal, laterally compressed, convex, pale yellow. Column 
short, declined; stamens 3, the two fertile ones situated each side of the column. 
The body that answers to the stamen in other orchids is but rudimentary in this 
genus; and situated on the upper side of the column, covering the whole style. 
It is dilated-triangular or heart-shaped and pointed; f/aments short; anthers 2- 
celled, opening by the face of the cells becoming filmy and glutinous, causing it 
to be ruptured when touched ; pollen mealy-pulverent, adhering to the detached 
portions of the cell-face. Style a broad, terminal, obscurely 3-lobed, roughish, moist 
disk. 
Orchidaceszs.—This vast order of striking and strangely beautiful plants 
is characterized as follows: Herds of varied aspect, often epiphytes. Aoots often 
tuberous or tuber-bearing. eaves alternate, parallel veined. /Zowers irregular, 
each subtended by a bract, and assuming such varied forms as to often resemble 
birds, insects, etc.: pevianth of 6 parts (calyx 3, corolla 3); one of the petals, the 
upper one, is termed the /adel/um or saccate lip; this, by the twisting of the ovary 
or axis, becomes generally anterior. A column, composed of the united filament 
and style, renders the essential organs gynandrous. Séamen single (Ex. Cypripe- 
* Kénpss, Aypris, Venus, rééduv, podion, a sock or buskin; Venus’s slipper. 
